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|
#!/bin/sh
#
# postgresql-setup Initialization and upgrade operations for PostgreSQL
# PGVERSION is the full package version, e.g., 9.0.2
# Note: the specfile inserts the correct value during package build
PGVERSION=xxxx
# PGENGINE is the directory containing the postmaster executable
# Note: the specfile inserts the correct value during package build
PGENGINE=xxxx
# PREVMAJORVERSION is the previous major version, e.g., 8.4, for upgrades
# Note: the specfile inserts the correct value during package build
PREVMAJORVERSION=xxxx
# PREVPGENGINE is the directory containing the previous postmaster executable
# Note: the specfile inserts the correct value during package build
PREVPGENGINE=xxxx
# Absorb configuration settings from the specified systemd service file,
# or the default "postgresql" service if not specified
SERVICE_NAME="$2"
if [ x"$SERVICE_NAME" = x ]
then
SERVICE_NAME=postgresql
fi
if [ -f "/etc/systemd/system/${SERVICE_NAME}.service" ]
then
SERVICE_FILE="/etc/systemd/system/${SERVICE_NAME}.service"
elif [ -f "/lib/systemd/system/${SERVICE_NAME}.service" ]
then
SERVICE_FILE="/lib/systemd/system/${SERVICE_NAME}.service"
else
echo "Could not find systemd unit file ${SERVICE_NAME}.service"
exit 1
fi
# Get port number and data directory from the service file
PGPORT=`sed -n 's/Environment=PGPORT=//p' "${SERVICE_FILE}"`
PGDATA=`sed -n 's/Environment=PGDATA=//p' "${SERVICE_FILE}"`
# Log file for initdb
PGLOG=/var/lib/pgsql/initdb.log
# Log file for pg_upgrade
PGUPLOG=/var/lib/pgsql/pgupgrade.log
export PGPORT
export PGDATA
# For SELinux we need to use 'runuser' not 'su'
if [ -x /sbin/runuser ]
then
SU=runuser
else
SU=su
fi
script_result=0
# code shared between initdb and upgrade actions
perform_initdb(){
if [ ! -e "$PGDATA" -a ! -h "$PGDATA" ]
then
mkdir -p "$PGDATA" || return 1
chown postgres:postgres "$PGDATA"
chmod go-rwx "$PGDATA"
fi
# Clean up SELinux tagging for PGDATA
[ -x /sbin/restorecon ] && /sbin/restorecon "$PGDATA"
# Create the initdb log file if needed
if [ ! -e "$PGLOG" -a ! -h "$PGLOG" ]
then
touch "$PGLOG" || return 1
chown postgres:postgres "$PGLOG"
chmod go-rwx "$PGLOG"
[ -x /sbin/restorecon ] && /sbin/restorecon "$PGLOG"
fi
# Initialize the database
$SU -l postgres -c "$PGENGINE/initdb --pgdata='$PGDATA' --auth='ident'" >> "$PGLOG" 2>&1 < /dev/null
# Create directory for postmaster log files
mkdir "$PGDATA/pg_log"
chown postgres:postgres "$PGDATA/pg_log"
chmod go-rwx "$PGDATA/pg_log"
if [ -f "$PGDATA/PG_VERSION" ]
then
return 0
fi
return 1
}
initdb(){
if [ -f "$PGDATA/PG_VERSION" ]
then
echo $"Data directory is not empty!"
echo
script_result=1
else
echo -n $"Initializing database ... "
if perform_initdb
then
echo $"OK"
else
echo $"failed, see $PGLOG"
script_result=1
fi
echo
fi
}
upgrade(){
# must see previous version in PG_VERSION
if [ ! -f "$PGDATA/PG_VERSION" -o \
x`cat "$PGDATA/PG_VERSION"` != x"$PREVMAJORVERSION" ]
then
echo
echo $"Cannot upgrade because database is not of version $PREVMAJORVERSION."
echo
exit 1
fi
if [ ! -x "$PGENGINE/pg_upgrade" ]
then
echo
echo $"Please install the postgresql-upgrade RPM."
echo
exit 5
fi
# Make sure service is stopped
# Using service here makes it work both with systemd and other init systems
service "$SERVICE_NAME" stop
# Set up log file for pg_upgrade
rm -f "$PGUPLOG"
touch "$PGUPLOG" || exit 1
chown postgres:postgres "$PGUPLOG"
chmod go-rwx "$PGUPLOG"
[ -x /sbin/restorecon ] && /sbin/restorecon "$PGUPLOG"
# Move old DB to PGDATAOLD
PGDATAOLD="${PGDATA}-old"
rm -rf "$PGDATAOLD"
mv "$PGDATA" "$PGDATAOLD" || exit 1
echo -n $"Upgrading database: "
# Create empty new-format database
if perform_initdb
then
# Do the upgrade
$SU -l postgres -c "$PGENGINE/pg_upgrade \
'--old-bindir=$PREVPGENGINE' \
'--new-bindir=$PGENGINE' \
'--old-datadir=$PGDATAOLD' \
'--new-datadir=$PGDATA' \
--link \
'--old-port=$PGPORT' '--new-port=$PGPORT' \
--user=postgres" >> "$PGUPLOG" 2>&1 < /dev/null
if [ $? -ne 0 ]
then
# pg_upgrade failed
script_result=1
fi
else
# initdb failed
script_result=1
fi
if [ $script_result -eq 0 ]
then
echo $"OK"
else
# Clean up after failure
rm -rf "$PGDATA"
mv "$PGDATAOLD" "$PGDATA"
echo $"failed"
fi
echo
echo $"See $PGUPLOG for details."
}
# See how we were called.
case "$1" in
initdb)
initdb
;;
upgrade)
upgrade
;;
*)
echo $"Usage: $0 {initdb|upgrade} [ service_name ]"
exit 2
esac
exit $script_result
|
